To access the timing chain, you will need to:
1. Remove the timing cover: This is typically held in place by several bolts.
2. Remove the accessory components: This includes the water pump, alternator, and power steering pump.
Once the timing cover is removed, you will be able to see the timing chain and the timing gears.
Important note: Working on the timing chain is a complex procedure that requires specialized tools and knowledge. It is recommended to consult a qualified mechanic or refer to a repair manual before attempting to work on the timing chain of an Oldsmobile 403 engine.
